Usually a girl has around 13 periods a year.
probably
12 year old girls can if they have started their periods and had sexual intercourse
A bigger stomach and no periods :/
Young girls may not have regular periods for their first year or two, or their periods may be very light, a condition known as oligomenorrhea.
Girls have had periods since well, ever! A period is when blood is realised out of a girls vagina. That's it basically
12
Periods have nothing to do with sexual orientation. Lesbians are just as capable of menstruating as straight girls.
Yes all girls start there periods between the ages of 9-16
if they have started their periods then yes, but I'm a bloke so I'm not really an expert
No
Periods
some changes are pimples,and for girls periods and for boys a liquid that is heaver than water containing sperm which if girls have they're period can get girls pregnant.